Loom shuttle



April 13 1926. 1,580,959

G. M. CHENEY LOOM SHUTTLE Filed August 6, 1923' 2 Sheets-Sheet 1 Eg -t..- ma F April 13 1926.

G. M. CHENEY LUOM SHUTTLE Filed August 1923 2 Sheets-Sheet 2 Patented Apr. 13, 1926.

UNITED STATES rarsnr ,ris.

enonen M. CHENEY, on SOUTHBRIDGE, MASSACHUSETTS, assrenon To LIronrInLn snurrnn COMPANY, or sou'rnnnrnen, MASSACHUSETTS, A oonrosarron OF MASSACHUSETTS.

LOOM SHUTTLE.

Application filed. August 6, 1923 Serial No. 656,024.

To all whom it may concern:

Be it known that I, Gnonen M. CHENEY, a citizen of the United States, and resident of Southbridge in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Loom Shuttles, of which the following is a specification.

This invention relates to loom shuttles and is intended to provide an eliicient reliable and durable construction for securing and retaining against axial movement on the supporting spindle of the shuttle either a paper cop tube or a wooden bobbin oi' the usual construction as the demands of the particular work may require the use of either of these forms of yarn carriers. 1

Heretofore it has been proposed to employ a spring tongue or finger bent in such form as to grippingly engage either a cop tube or a bobbin to hold them in position against longitudinal shitting, but in such constructions the tension or grip of the spring fingers was produced by the use of spring material 'for the manufacture of the gripping member with the consequent result that the continued flexing of theseflexible members either weakened or impaired their action, or frequently caused them to break off rendering the shuttle useless for practical purposes until repair.

According to the principle of the present invention I overcome these and other aurculties encountered in the use of such spring-tongue gripping means by providing a two-part retaining member made of rigid material one part being constructed to engage and retain a cop tube while the other part is arranged to engage and retain a bobbin against axial displacement on the spindle both parts being carried by a common supporting member that is actuated by a compressed spring to maintain a strong gripping tension on either parts of the retaining member when the spindle is in axial or operative position for weaving, the parts being released from their respective gripping engagements by pressure exerted upon said supporting member when the spindle is swung laterally out of the shuttle for weaving or substltuting cop tubes or bobbins.

This and other features of the invention will be described 1n the following specification and will be defined in the claims here Figure 8 ma view similar to Figure 1 showing the spindle in idler or releasing po sition.

Figure at is an enlarged detailview showing the device operatively gripping a cop tube.

Figure 5 is a similar view showing the retaining device operatively gripping a bobbin.

Figure 6 is a transverse View showing the paper cop tube squeezed against the blade of the spindle by its appropriate retaining member.

Figure 7 is a longitudinal section showing means for adapting the ordinary coptube spindle blade to bobbins of large bore.

Figure 8 is a transverse section through the blade and its bobbin carrier.

' In the practice of this invention according to the form illustrated. the shuttle body 1, is of any usual or suitable construction having its middle portion cut away to receive the yarn package for weaving. At its rear end it is provided with a transverse pivot or t'ulcral pin 2, which is also passed through an aperture formed in the heel or enlarged end 3 of the spindle 4, which spindle is adapted to receive either a cop tube or a bobbin carrying the filling. I

The heel portion or base 3, of the spindle is provided with a cam-like surface 3 so d sposed as to he engaged by a sprin -pressed plunger 5 which is pressed 'forwiirdly by a helical compression spring 6, to normally maintain the spindle in its position in the shuttle operative for weaving. The adja cent face 8" of the heel is disposed at an angle tothe cam face 3, so that when the spindle is swung to outward position, as illustrated in Figure 3, the plunger 5 presses against the apex or extreme end of the heel of the spindle as shown in Figure 3. It will be observed that in the one case the bearing point of thrust of the plunger is above the pivotal axis of the. spindle, while in the other case the point otthrust is below the pivotal aziis of the spindle so that the spindle will be retained by the tension spring and plunger in either position otadjustment.

The base of the spindle immediately in front of the pivot pin 2, is bored and counterbored to receive a transversely movable supporting pin 7 whose rounded head 7, reeeives the thrust of a helical spring 8, thereby tending to draw the lower or opposite end of the supporting pin 7 inward toward the axis of the spindle. To theilower end or said supporting pin is secured a two-part retainer comprising a hook-like member 9 of comparatively rigid material and another hook-like member 10, one of said retaining members, in this case both, being provided with an angularly turned end portion or flange 10 and 9 to engage the parallel faces of an abutting shoulder portion 3, so as to prevent rotative movement of the supporting pin 7 by reason of the engagement between said shoulder and said inturned flanges. The inner or shorter retaining member 9 1s positioned to press against the large rear end of the blade or spindle, the cop-engaging end of the retaining memher 9 being provided with a circular recess as shown in Figure 6 so that its hook or lip presses the engaged portion of the cop tube 6 against said blade in order to make a substantial and firm lock against endwise shifting of the cop tube bf under the severe shock to which the shuttle is subjeeted during the weaving. The other part 10, of the retaining means is similarly recessed to partly surround and sink into the groove formed on the rear end of the bobbin a. r

The operation is as follows. In order to insert a cop tube the spindle is swung outwardly and in such swinging movement the rounded head 7% of the support for the copretaining means comes into contact with an obstruction such as a cross pin 11 which forces the supporting pin transversely of. the spindle thereby carrying the two rigid retainers away from the spindle as shown in Figure 3 in order to permit the insertion of the cop tube with its rear end overlapping the greove 4 in the spindle. Upon swinging the spindle back in operative position axially of the shuttle, the head 7 being moved away from its engagement with the obstructing pin or shoulder 11, the spring,

is free to act and draws the supporting pin 7, and consequently thecop-lock1ngme1nher 9, into gripping engagement with the cop tube gripping it against the blade and thus firmly holding the cop tube in place by compressing the pliable material of which it is made. I} The action of the other retaining member is similar to that already described only as the bobbin a is provided with an annular groove itself and is of relatively rigid material there is no compression of the bobbin into locking engagement with the spindle, but the positive locking is secured by means of the positive engagement between the hook nember 10 and the holding groove and being mounted to move bodily trans-;

versely'of the spindle blade it will be seen that longitudinalstress on the filling cop due to the strain or shocks of actual service do not tend to produce any action on the actuating spring since the pull of such strain is at substantially right angles to the direction of yield of the spring and the hook members being made rigid enough to resist yielding under such strain on their inturned ends do not tend to release or weaken their locking engagement, which to all'practical intent is positive and unyielding.

There is a tendency of the retaining members with their supporting pin 7 to turn or twist in the pin socket when the hook end is thrust outward by pressure on the head of the pin with the consequence that the inturned bobbin-engaging edge of the hook 10 may stand at an angle to the bobbin'groove instead of parallel therewith, which prevents proper seating ot the retaining hook in the groove and tends to splinter or wear the edge of the groove. To prevent this 1 construct the cooperating parts of the retaining members and the head so that one telescopes into the other. It will be seen by reference to Fig. 3 that the projecting ledge 3 telescopes into the space or groove formed by inturned portions 9 and 10.

The form of spindlehead or heel shown in Fig. 7 is slightly different. In that case instead of cutting away the whole underside of the block 30 except the lip 80 the entire lower part of the block 30 remains eX cept for the transverse slot at 30 which is adapted to receive the inturned guide por tion 9 of the cop-tube engaging member.

Sometimes bobbins are used whose internal diameter or bore is too large to snugly lit the spindle blade even though a split or expansible blade for holding cop-tubes like that shown be used.

compress the split blade 4 over which sleeve 1': is placed a metal covering or shell whose opposite end edges are crimped in upon the end of the inner tube. This tubularstructare near its rear end is cut across one side to form a transverse groove dimensioned to receive the forward in-turned tongue of hook 9 and is thereby positively held against axial displacement along the spindle.

What I claim is:

1. A loom shuttle embracing in its construction a shuttle body, aspindle adapted to carry either cop-tubes or bobbins, asdesired, said spindle being fulcrumed to be swung out of the shuttle to permit removal of the cop tube or bobbin, a substantially rigid copgripping member whose forward end is turned inwardly to present a gripping edge against a cop tube, a bobbin-retaining member whose forward end is inturned beyond the cop-engagin member, to engage a bobbin, a transversely movable springpressed supporting element to which said members are secured and normally acting to draw said retaining members toward the spindle when in service position while shifting them to releasing position when the spindle is swung outwardly.

2. A loom shuttle embracing in combination, a shuttle body, a spindle adapted for both cops and bobbins pivoted about a transverse axis of the shuttle, a spring-pressed supporting pin loosely mounted in the head of the spindle to slide transversely of said spindle axis, two hook-like rigid members of unequal length secured to said pin to extend forwardly of the axis, the inner having its forward edge turned inwardly to grip an interposed cop tube against the spindle, the outer member having its for ward end beyond the cop-gripping member turned inward to engage a bobbin, both members being normally drawn to service position by said pin and being automatically shifted to releasing position by the out ward movement of the spindle, substantiab ly as described.

3. A cop-supporting spindle device for a loom shuttle embracing in its construction a spindle blade adapted to be fulcrumed in a shuttle, means for retaining tubes of different diameter on the spindle against longitudinal displacement comprising a plurality of inwardly turned hook-like members projecting inwardly different distances from the spindle blade and bodily movable inward under the transverse thrust of an actuating spring, said members being construct-ed and supported to be unyielding under longitudinal stress on the yarn cop whereby the cop is positively held against axial displacement, scribed. m

- 4. In a loom shuttle, the combination of a pivotal spindle blade, a transversely slidable spring-pressed supporting element, outer and inner rigidplates secured to said pin and extending forwardly therefrom, each plate having an inturned end edge to engage yarn-carrying tubes of diflerent diameters, and having also rearward extensions inwardly turned and spaced apart to engage opposite sides of a guiding portion of the spindle, substantially as described.

5. In a loom shuttle, the combination with a pivotal spindle embracing a fulcral head, and a blade adapted to carry either-cop tubes or bobbins, as desired, a transversely slidable spring-pressed pin mounted in said fulcral head, parallel hook members of unequal length secured to said pin and having their forward edges inturned to engage and retain, respectively, a cop-tube or a bobbin, the rear end of one of said hook members being inturned to form telescopic engage ment with atransverse recess formed in the fulcral head whereby the hook members are accurately positioned at all times, substantially as described.

I 6. A. shuttle spindle embracing in its construction a spindle blade and head adapted to be fulcrumed in the shuttle, a transverse spring pressed pin mounted in said head, inwardly turned substantially rigid tuberetaining members carried by and movable with said transverse pin to engage respectively yarn-carrying tub-es of different di ameters, said members and the spindle head being formed with tongue and groove torsion-preventing engagement, substantially as described.

7 A spindle for a loom shuttle embracing a blade and a head and spring actuated means for engaging a bobbin to hold it against axial displacement, a sleeve dimensioned to fit over the blade and inside the bobbin, and means coacting with the bobbin engaging means for holding the sleeve against axial slip, substantially as described.

8. A spindle for a loom shuttle embracing a cop-holding blade, a bobbin-holding sleeve adapted to fit over the blade and inside'the bobbin, cop-tube and bobbin-holdin members normallypressed toward the b ade by spring tension, the cop-holding member being arranged to interlockingly engage said sleeve when the bobbin holding member is operatively engaged with the bobbin, substantially as described.

9. A bobbin-holding sleeve for the cop spindle of a shuttle embracing a metallic substantially as deouter tube adapted to fit the bore of a bobbin, and an interior bushing adapted to fit around the blade of the spindle, both being transversely recessed to receive a retaining nielnb'er carried by the spindle, sub stan tiitlly as described.

10. The combination with a spindle blade and its fulcral supporting head, of transversely movable spring-actuated members located respectively to engage a cop-tube ,and a bobbin to prevent axial slip, a transversely recessed bobbin-holding sleeve formed to firmly support a bobbin on the spindle blade in engagement with the bobbin retaining member and be itself engaged by the c0p-h0lding member substantially. as described.

In Witness whereof, I have subscribed the above specification.

GEORGE M. CHENEY. 

